
15 LCD CONTROLLER
132
EPSON
S1C38000 TECHNICAL MANUAL
bits 25–16 Picture-in-Picture Y End Position Bits [9:0]
These bits determine the Y end position of the Picture-in-Picture sub-window in relation
to the origin of the panel. Due to the S1C38000 SwivelView feature, the Y end position
may not be a vertical position value (only true in 0° and 180° SwivelView). For further
information on defining the value of the Y End Position register, see Section 15.11,
“Picture-in-Picture Plus” on page 151.
The register is also incremented differently based on the SwivelView orientation. For 0°
and 180° SwivelView the Y end position is incremented in 1 line increments. For 90°
and 270° SwivelView the Y end position is incremented by y pixels where y is relative
to the current color depth.
Depending on the color depth, some of the higher bits in this register are unused because
the maximum vertical display height is 1024 pixels.
Notes: These bits have no effect unless the Picture-in-Picture Enable bit is set to 1 (LCD[10h]
bit 19).
In Little Endian mode the effect of LCD[58h] and LCD[5Ch] takes place only after
LCD[5Ch] bits [7:0] are written and at the next vertical non-display period.
In Big Endian mode the effect of LCD[58h] and LCD[5Ch] takes place only after
LCD[5Ch] bits [31:24] are written and at the next vertical non-display period.
When LCD[60h] bit 2, Latch Byte Select, is set to 1 the following is in effect:
In Little Endian mode the effect of LCD[58h] and LCD[5Ch] takes place only after
LCD[5Ch] bits [31:24] are written and at the next vertical non-display period.
In Big Endian mode the effect of LCD[58h] and LCD[5Ch] takes place only after
LCD[5Ch] bits [7:0] are written and at the next vertical non-display period.
bits 9–0
Picture-in-Picture Y Start Position Bits [9:0]
These bits determine the Y start position of the Picture-in-Picture sub-window in
relation to the origin of the panel. Due to the S1C38000 SwivelView feature, the Y start
position may not be a vertical position value (only true in 0° and 180° SwivelView). For
further information on defining the value of the Y Start Position register, see Section
15.11, “Picture-in-Picture Plus” on page 151.
The register is also incremented differently based on the SwivelView orientation. For 0°
and 180° SwivelView the Y start position is incremented in 1 line increments. For 90°
and 270° SwivelView the Y start position is incremented by y pixels where y is relative
to the current color depth.
Picture-in-Picture Y Positions Register
LCD[5Ch]
Default = 0000 0000h
Read/Write
n/a
Picture-in-Picture Y End Position
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
n/a
Picture-in-Picture Y Start Position
15
14
13
12
11
10
9876543210
Table 15-16 32-Bit Address Increments for Color Depth
Color Depth
Pixel Increment (y)
1 bpp
32
2 bpp
16
4 bpp
8
8 bpp
4
16 bpp
2